| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.cxf.jaxrs.provider; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Type; |
| import java.nio.charset.StandardCharsets; |
| import java.util.logging.Logger; |
| |
| import javax.ws.rs.Consumes; |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.core.Context; |
| import javax.ws.rs.core.MediaType; |
| import javax.ws.rs.core.MultivaluedMap; |
| import javax.ws.rs.ext.MessageBodyReader; |
| import javax.ws.rs.ext.MessageBodyWriter; |
| import javax.ws.rs.ext.Provider; |
| import javax.xml.stream.XMLStreamException; |
| import javax.xml.stream.XMLStreamReader; |
| import javax.xml.stream.XMLStreamWriter; |
| import javax.xml.transform.Source; |
| import javax.xml.transform.dom.DOMSource; |
| import javax.xml.transform.sax.SAXSource; |
| import javax.xml.transform.stream.StreamSource; |
| |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Node; |
| |
| import org.apache.cxf.common.logging.LogUtils; |
| import org.apache.cxf.io.CachedOutputStream; |
| import org.apache.cxf.jaxrs.ext.MessageContext; |
| import org.apache.cxf.jaxrs.ext.xml.XMLSource; |
| import org.apache.cxf.jaxrs.utils.ExceptionUtils; |
| import org.apache.cxf.jaxrs.utils.HttpUtils; |
| import org.apache.cxf.jaxrs.utils.JAXRSUtils; |
| import org.apache.cxf.message.Message; |
| import org.apache.cxf.phase.PhaseInterceptorChain; |
| import org.apache.cxf.staxutils.DepthExceededStaxException; |
| import org.apache.cxf.staxutils.StaxSource; |
| import org.apache.cxf.staxutils.StaxUtils; |
| |
| @Provider |
| @Produces({"application/xml", "application/*+xml", "text/xml" }) |
| @Consumes({"application/xml", "application/*+xml", "text/xml", "text/html" }) |
| public class SourceProvider<T> extends AbstractConfigurableProvider implements |
| MessageBodyReader<T>, MessageBodyWriter<T> { |
| |
| private static final String PREFERRED_FORMAT = "source-preferred-format"; |
| private static final Logger LOG = LogUtils.getL7dLogger(SourceProvider.class); |
| @Context |
| private MessageContext context; |
| |
| |
| public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mt) { |
| return Source.class.isAssignableFrom(type) |
| || Node.class.isAssignableFrom(type); |
| } |
| |
| public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mt) { |
| return Source.class.isAssignableFrom(type) |
| || XMLSource.class.isAssignableFrom(type) |
| || Document.class.isAssignableFrom(type); |
| } |
| |
| public T readFrom(Class<T> source, Type genericType, Annotation[] annotations, MediaType m, |
| MultivaluedMap<String, String> headers, InputStream is) |
| throws IOException { |
| |
| Class<?> theSource = source; |
| if (theSource == Source.class) { |
| String s = getPreferredSource(); |
| if ("sax".equalsIgnoreCase(s) || "cxf.stax".equalsIgnoreCase(s)) { |
| theSource = SAXSource.class; |
| } |
| } |
| try { |
| if (DOMSource.class.isAssignableFrom(theSource) || Document.class.isAssignableFrom(theSource)) { |
| |
| boolean docRequired = Document.class.isAssignableFrom(theSource); |
| XMLStreamReader reader = getReader(is); |
| try { |
| Document doc = StaxUtils.read(reader); |
| return source.cast(docRequired ? doc : new DOMSource(doc)); |
| } catch (DepthExceededStaxException e) { |
| throw ExceptionUtils.toWebApplicationException(null, JAXRSUtils.toResponse(413)); |
| } catch (XMLStreamException e) { |
| if (e.getMessage() != null && e.getMessage().startsWith("Maximum Number")) { |
| throw ExceptionUtils.toWebApplicationException(null, JAXRSUtils.toResponse(413)); |
| } |
| throw ExceptionUtils.toBadRequestException(e, null); |
| } catch (Exception e) { |
| IOException ioex = new IOException("Problem creating a Source object"); |
| ioex.setStackTrace(e.getStackTrace()); |
| throw ioex; |
| } finally { |
| try { |
| reader.close(); |
| } catch (XMLStreamException e) { |
| //ignore |
| } |
| } |
| } else if (SAXSource.class.isAssignableFrom(theSource) |
| || StaxSource.class.isAssignableFrom(theSource)) { |
| return source.cast(new StaxSource(getReader(is))); |
| } else if (StreamSource.class.isAssignableFrom(theSource) |
| || Source.class.isAssignableFrom(theSource)) { |
| return source.cast(new StreamSource(getRealStream(is))); |
| } else if (XMLSource.class.isAssignableFrom(theSource)) { |
| return source.cast(new XMLSource(getRealStream(is))); |
| } |
| } catch (ClassCastException e) { |
| String msg = "Unsupported class: " + source.getName(); |
| LOG.warning(msg); |
| throw ExceptionUtils.toInternalServerErrorException(null, null); |
| } |
| |
| throw new IOException("Unrecognized source"); |
| } |
| |
| protected XMLStreamReader getReader(InputStream is) { |
| XMLStreamReader reader = getReaderFromMessage(); |
| if (reader == null) { |
| reader = StaxUtils.createXMLStreamReader(is); |
| } |
| return configureReaderRestrictions(reader); |
| } |
| |
| protected XMLStreamReader configureReaderRestrictions(XMLStreamReader reader) { |
| Message message = PhaseInterceptorChain.getCurrentMessage(); |
| if (message != null) { |
| try { |
| return StaxUtils.configureReader(reader, message); |
| } catch (XMLStreamException ex) { |
| throw ExceptionUtils.toInternalServerErrorException(ex, null); |
| } |
| } |
| return reader; |
| } |
| |
| protected InputStream getRealStream(InputStream is) throws IOException { |
| XMLStreamReader reader = getReaderFromMessage(); |
| return reader == null ? is : getStreamFromReader(reader); |
| } |
| |
| private InputStream getStreamFromReader(XMLStreamReader input) |
| throws IOException { |
| |
| try (CachedOutputStream out = new CachedOutputStream()) { |
| StaxUtils.copy(input, out); |
| return out.getInputStream(); |
| } catch (XMLStreamException ex) { |
| throw new IOException("XMLStreamException:" + ex.getMessage()); |
| } |
| } |
| |
| protected XMLStreamReader getReaderFromMessage() { |
| MessageContext mc = getContext(); |
| if (mc != null) { |
| return mc.getContent(XMLStreamReader.class); |
| } |
| return null; |
| } |
| |
| public void writeTo(T source, Class<?> clazz, Type genericType, Annotation[] annotations, |
| MediaType mt, MultivaluedMap<String, Object> headers, OutputStream os) |
| throws IOException { |
| |
| String encoding = HttpUtils.getSetEncoding(mt, headers, StandardCharsets.UTF_8.name()); |
| |
| final XMLStreamReader reader; |
| if (source instanceof Source) { |
| reader = StaxUtils.createXMLStreamReader((Source)source); |
| } else if (source instanceof Document) { |
| reader = StaxUtils.createXMLStreamReader((Document)source); |
| } else { |
| reader = StaxUtils.createXMLStreamReader(new DOMSource((Node)source)); |
| } |
| XMLStreamWriter writer = StaxUtils.createXMLStreamWriter(os, encoding); |
| try { |
| StaxUtils.copy(reader, writer); |
| } catch (XMLStreamException e) { |
| throw ExceptionUtils.toInternalServerErrorException(e, null); |
| } finally { |
| try { |
| reader.close(); |
| } catch (XMLStreamException e) { |
| //ignore |
| } |
| try { |
| writer.flush(); |
| writer.close(); |
| } catch (XMLStreamException e) { |
| //ignore |
| } |
| } |
| } |
| |
| public long getSize(T source, Class<?> type, Type genericType, Annotation[] annotations, |
| MediaType mt) { |
| return -1; |
| } |
| |
| protected String getPreferredSource() { |
| MessageContext mc = getContext(); |
| String source = null; |
| if (mc != null) { |
| source = (String)mc.getContextualProperty(PREFERRED_FORMAT); |
| } |
| return source != null ? source : "sax"; |
| |
| } |
| |
| protected MessageContext getContext() { |
| return context; |
| } |
| } |